Hello.


I've found that mysql_ping doesn't work properly with TCP connection (in

your test case you put the hostname to "127.0.0.1"). My program was

working with "localhost" - connection through the Unix socket. You may

want to add you comments to my bug report at:

  http://bugs.mysql.com/bug.php?id=14057









Lefteris Tsintjelis wrote:

> I did some extensive testing and it looks like that only the first

> mysql_ping () fails to reconnect or very possibly returns the wrong

> result. I am currently using v4.1.14.

> 

> Regards,

> 

> Lefteris

> 

> ----------------------------------------------------

> Begin

> MySQL is up and running

> Restart MySQL and hit enter (reconnect: 1)...

> 

> Error: Lost connection to MySQL server during query

> Ping 2 Ok!

> Ping 3 Ok!

> ----------------------------------------------------

> #include <stdio.h>

> #include <mysql.h>

> 

> int main ()

> {

>         int i;

>         char c;

>         MYSQL mysql;

> 

>         fprintf (stdout, "Begin\n");

>         mysql_init (&mysql);

>         if (!mysql_real_connect (&mysql, "127.0.0.1", "root", "",

> "test", 0, NULL, 0))

>                 fprintf (stderr, "Failed to connect to database: Error:

> %s\n", mysql_error (&mysql));

>         else

>                 fprintf (stdout, "MySQL is up and running\n");

>         mysql.reconnect = 1;

>         fprintf (stdout, "Restart MySQL and hit enter (reconnect:

> %d)...", mysql.reconnect);

>         c = getchar ();

>         (void) putc ('\n', stdout);

>         for (i = 1; i < 4; i++)

>                 if (mysql_ping (&mysql))

>                         fprintf (stderr, "Error: %s\n",

> mysql_error(&mysql));

>                 else

>                         fprintf (stdout, "Ping %d Ok!\n", i);

>         return (0);

> }

> 



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